package com.hmall.order.itercptor;

import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.hmall.order.utils.UserHolder;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.soap.MimeHeaders;


@Slf4j
public class UserInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception{
        //1.获取请求头
        String authorization = request.getHeader("authorization");
        if (StringUtils.isBlank(authorization)){
            log.warn("非法用户访问！请求路径：{}",request.getRequestURI());
            //没有用户信息，未登录
            throw new RuntimeException("用户未登录");
            //或者  return false; response.setstatus(403)
        }
        //2.准换用户id
        Long userId = Long.valueOf(authorization);
        //3.存入ThreadLocal
        UserHolder.setUser(userId);
        //4.放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
                                Exception ex) throws Exception{
        //用完清理掉
        UserHolder.removeUser();
    }
}
